-2.47% is the change from 648 to 632
Calculation steps:
[( 632 - 648 ) ÷ 648] x 100 = -2.47%
Formula
Percentage change = [(632 - 648) / 648] x 100
Subtract the new number by the original number
632 - 648 = -16
-16 ÷ 648 = -0.024691358024691357
-0.024691358024691357 x 100 = -2.47%